Miles between Ontario, CA and Romeoville, IL

There are
1,964 mi
from Ontario, CA to Romeoville, IL

That's the driving distance. It would take 1 day 10 hours to go from Ontario, California to Romeoville, Illinois.

The flight distance (direct flight from Ontario, CA to Romeoville, IL) is 1,686.01 mi.

1,964 mi = 1.61 kms